<template>
  <div class="app-container">
  <!--查询表单-->
  <el-form :inline="true" class="demo-form-inline">
    <el-form-item>
      <el-input v-model="courseQuery.title" placeholder="课程标题"/>
    </el-form-item>

    <el-form-item>
      <el-select v-model="courseQuery.status" clearable placeholder="课程状态">
        <el-option value="Normal" label="已发布"/>
        <el-option value="Draft" label="未发布"/>
      </el-select>
    </el-form-item>

    <el-form-item label="添加时间">
      <el-date-picker
        v-model="courseQuery.begin"
        type="datetime"
        placeholder="选择开始时间"
        value-format="yyyy-MM-dd HH:mm:ss"
        default-time="00:00:00"
      />
    </el-form-item>

    <el-form-item>
      <el-date-picker
        v-model="courseQuery.end"
        type="datetime"
        placeholder="选择截止时间"
        value-format="yyyy-MM-dd HH:mm:ss"
        default-time="00:00:00"
      />
    </el-form-item>
    <el-button type="primary" icon="el-icon-search" @click="getList()">查询</el-button>
    <el-button type="default" @click="resetData()">清空</el-button>
  </el-form>

    <!-- 表格 -->
    <el-table :data="list" border fit highlight-current-row>
      <!--      序号-->
      <el-table-column label="序号" width="70" align="center">
        <template slot-scope="scope">
          {{ (page - 1) * limit + scope.$index + 1 }}
        </template>
      </el-table-column>

      <!--课程标题-->
      <el-table-column prop="title" label="课程标题" width="80" />

      <!--价格-->
      <el-table-column prop="price" label="价格" />

      <!--总课时-->
      <el-table-column prop="lessonNum" label="总课时" />

      <!--销售数量-->
      <el-table-column prop="buyCount" label="销售数量" />

      <el-table-column  label="课程状态" width="80">
        <template slot-scope="scope">
          {{scope.row.status==='Normal'?'已发布':'未发布'}}
        </template>
        </el-table-column>

      <!--浏览次数-->
      <el-table-column prop="viewCount" label="浏览次数" />

      <!--添加时间-->
      <el-table-column prop="gmtCreate" label="添加时间" width="160"/>

      <el-table-column label="操作" width="200" align="center">
        <template slot-scope="scope">

          <el-button type="danger" size="mini" icon="el-icon-delete" @click="removeDataById(scope.row.id)">删除</el-button>
        </template>
      </el-table-column>
    </el-table>

    <!-- 分页 -->
    <el-pagination
      :current-page="page"
      :page-size="limit"
      :total="total"
      style="padding: 30px 0; text-align: center;"
      layout="total, prev, pager, next, jumper"
      @current-change="getList"
    />

  </div>
</template>

<script>
  import course from '@/api/edu/course'
    export default {
      data() { //定义变量和初始值
        return {
          list:null,//查询之后接口返回集合
          page:1,//当前页
          limit:5,//每页记录数
          total:0,//总记录数
          courseQuery:{} //条件封装对象
        }
      },
      created() { //页面渲染之前执行，一般调用methods定义的方法
          this.getList();
      },
      methods:{
        //查询用户列表
        getList(page=1){
          this.page = page
          course.getCourseListPage(this.page,this.limit,this.courseQuery)
          .then(response =>{
            this.list = response.data.rows
            this.total = response.data.total
          })
        },
        //清空
        resetData(){
          this.courseQuery = {}
          //查询所有讲师数据
          this.getList()
        },
        //删除课程
        removeDataById(id){
          this.$confirm('此操作将永久删除课程数据, 是否继续?', '提示', {
            confirmButtonText: '确定',
            cancelButtonText: '取消',
            type: 'warning'
          }).then(() => {  //点击确定，执行then方法
            //调用删除的方法
            course.delCourse(id)
              .then(response =>{//删除成功
                //提示信息
                this.$message({
                  type: 'success',
                  message: '删除成功!'
                });
                //回到列表页面
                this.getList()
              })
          })

        },

      },
    }
</script>

<style scoped>

</style>
